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Evaluate the significance of chromosomal behaviour during cell division. Provide justified arguments for and against the behaviour of independent assortment and crossing over leading to variation within an organism.
discuss the behaviour of the chromosomes during mitosis and meiosis in each stage of cell division, including the similarities and differences between plant and animal cells. Ensure you cover:
• Mitosis - interphase, prophase, metaphase, anaphase, telophase
• Meiosis - interphase, prophase I, metaphase I, anaphase I, telophase I, cytokinesis, interkinesis, prophase II, metaphase II, anaphase II, telophase II, cytokinesis
Explain in detail how and why the structure of the human chromosome relates to the function. Your explanations must include:
• centromere
• chromatids
• autosomes
• sex chromosomes
• chromosome number
• homologous
• non-homologous chromosomes
Evaluate the significance of chromosomal behaviour during cell division. Provide justified arguments for and against the behaviour of independent assortment and crossing over leading to variation within an organism.
discuss the behaviour of the chromosomes during mitosis and meiosis in each stage of cell division, including the similarities and differences between plant and animal cells. Ensure you cover:
• Mitosis - interphase, prophase, metaphase, anaphase, telophase
• Meiosis - interphase, prophase I, metaphase I, anaphase I, telophase I, cytokinesis, interkinesis, prophase II, metaphase II, anaphase II, telophase II, cytokinesis
Explain in detail how and why the structure of the human chromosome relates to the function. Your explanations must include:
• centromere
• chromatids
• autosomes
• sex chromosomes
• chromosome number
• homologous
• non-homologous chromosom
What are the chances of pulling red marble out of the bag containing the following marbles 4 red marbles, 3 yellow marbles, 3 green marbles
5. A rooster with grey feathers is mated with a hen of the same phenotype. Among their offspring 15 chicks are grey, 6 are black and 8 are white.
a. What is the simplest explanation for the inheritance of these colors in chickens? (3 points)
b. What offspring would you expect from the mating of a grey rooster and a black hen? (4 points punnett square; 6 points GR and PR)
4. Colorblindness is an X-linked trait caused by a recessive allele. A carrier female marries a normal male. (Punnett Square: 4 points)
a. How many of the male offspring can be expected to be color-blind? (1 point)
b. How many of the male offspring can be expected to have normal vision? (1 point)
c. How many of the female offspring can be expected to be carriers? (1 point)
d. How many of the female offspring can be expected to be normal? (1 point)
